Because it used to allow Apple to reject a warranty claim when they should honor it...mainly because they could BS their way into saying they were infallible before all of this... It's all about the Benjamins, you know.

No, something has changed. Previously a tripped moisture sensor would be grounds for an immediately voided warranty, now they'll take other points into account (presumably including, but not limited to, whether there is any other evidence of liquid damage, how convincing the customer's story is, how good a mood the manager is in that day, how attractive the customer is, how much fuss the customer kicks up, and the proximity of that day's lunch break).

My data center is held at constant temperature and humidity for electronics. I DON'T intend to stay in a data center to use a phone. In Alberta, Canada it routinely gets to -30C (as it did this morning in fact) and I expect the phone to work. Did I say, after it thaws out? No I meant in -30C weather.